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Finding the Fourth Proportional to 56,503.19, 84,752.03 and 20,971.42

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Solution

The fourth proportional to 56,503.19, 84,752.03 and 20,971.42 is: 31,456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,503.19 : 84,752.03 = 20,971.42 : x
  2. Step 2: Convert to fraction form
    56,503.19/84,752.03 = 20,971.42/x
  3. Step 3: Cross multiply
    56,503.19x = 84,752.03 × 20,971.42
  4. Step 4: Simplify right side
    56,503.19x = 1,777,370,312.13
  5. Step 5: Solve for x
    x = 1,777,370,312.13/56,503.19
  6. Step 6: Final answer
    x = 31,456.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.